Biographies

Mr. Donald E. Brandt is Chairman of the Board, President, Chief Executive Officer of the Company. He has been President of APS since May 2013, Chairman of the Board of APS since April 2009, and CEO of APS since March 2008. Mr. Brandt also served as President of APS from December 2006 to January 2009. Mr. Brandt has served as an officer of the Company in the following additional capacities: March 2008 to April 2009 as Chief Operating Officer; September 2003 to March 2008 as Executive Vice President; December 2002 to September 2003 as Senior Vice President; and December 2002 to March 2008 as Chief Financial Officer. As Chairman of the Board, President and CEO of the Company and APS, and with nearly three decades of experience in the utility industry, Mr. Brandt has a broad understanding of the factors affecting the Company's business. Mr. Brandt currently serves as Chairman of NEI and NEIL, Vice Chairman of INPO, and as a board member of EEI, all major industry organizations that provide insight into operational, financial and policy matters of great importance to the Company.

Mr. James R. Hatfield is Chief Financial Officer, Executive Vice President of the Company. He has been Executive Vice President of Pinnacle West and APS from 2012-Present, Chief Financial Officer of Pinnacle West and APS from 2008-Present. He previously served as Senior Vice President of Pinnacle West and APS from 2008-2012, Treasurer of Pinnacle West and APS from 2009-2010. Senior Vice President and Chief Financial Officer of OGE Energy Corp from 1999-2008.

Mr. Mark A. Schiavoni is Executive Vice President and Chief Operating Officer of APS of the Company. He served as Senior Vice President - Fossil Operations of APS, subsidiary of the Company from 2009 to 2012. He served as Senior Vice President of Exelon Generation and President of Exelon Power from 2004-2009.

Mr. David P. Falck is Executive Vice President, General Counsel of the Company and Arizona Public Service Company. He served as Secretary of Pinnacle West and APS from 2009-2012, Senior Vice President — Law of Public Service Enterprise Group Inc. from 2007-2009 and Partner — Pillsbury Winthrop Shaw Pittman LLP from 1987-2007.

Mr. Jeffrey B. Guldner is Senior Vice President - Public Policy of the Company. He was Senior Vice President, Customers and Regulation of APS 2012-2014, Vice President, Rates and Regulation of APS 2007-2012.

Ms. Denise R. Danner is Vice President, Chief Accounting Officer, Controller of the Company and Chief Accounting Officer, Vice President and Controller of Arizona Public Service Company, a subsidiary of the Company. She serves as Vice President, Controller and Chief Accounting Officer of Pinnacle West and Chief Accounting Officer of APS from 2010-Present; Vice President and Controller of APS from 2009-Present ; Senior Vice President, Controller and Chief Accounting Officer of Allied Waste Industries, Inc., from 2007-2008.

Mr. Lee R. Nickloy is Vice President, Treasurer of the Company. Mr. Nickloy joined Ameren in 1998 and served as Assistant Treasurer and Director of Corporate Finance. Prior to that time, he worked in a number of responsible positions with other energy-related companies. He has a B.S. degree from Christian Brothers University in Memphis, Tenn., with an emphasis in economics and finance.

Mr. Patrick Dinkel is Vice President - Transmission and Distribution Operations of APS, susidiary of Pinnacle West Capital Corporation. He was Vice President, Power Marketing, Resource Planning and Acquisition from 2011-2012, Vice President, Power Marketing and Resource Planning from 2010-2011, General Manager, Strategic Planning and Resource Acquisition from 2009-2010, Director of Resource Acquisitions and Renewables 2007-2009, Director of Planning and Resource Acquisitions from 2004-2007.

Ms. Barbara Gomez is Vice President, Human Resources of APS of Pinnacle West Capital Corp. Prior to that time, she was Vice President and Treasurer of Pinnacle West and APS (February 2004 – December 2008), Treasurer of Pinnacle West (August 1999 – February 2004) and Manager, Treasury Operations of APS (1997 – 1999). She was also elected Treasurer of APS in October 1999 and Vice President of APS in February 2004.

Mr. Randall K. Edington is Executive Vice President, Chief Nuclear Officer of the Company. He served as Senior Vice President and Chief Nuclear Officer of APS since 2007 and Site Vice President and Chief Nuclear Officer of Cooper Generating Station with Entergy Corporation from 2003-2007.

Mr. John S. Hatfield is Vice President - Communications of Arizona Public Service Company subsidiary of the Company. He was Director, Corporate Communications of Southern California Edison from 2004-2010.

Ms. Kathryn L. Munro is Lead Independent Director of the Company. She has held this position since July 2003. Ms. Munro was Chairman of BridgeWest, LLC from February 1999 until July 2003. From 1996 to 1998, Ms. Munro served as Chief Executive Officer of Bank of America's ("BofA") Southwest Banking Group and was President of BofA Arizona from 1994 to 1996. Prior to that, Ms. Munro held a variety of senior positions during her 20-year career with BofA. Ms. Munro is also a director of Knight Transportation, Inc. ("Knight") and Premera Blue Cross. Within the past five years, Ms. Munro was a director of FLOW International Corporation. As principal of an investment company, and as former Chief Executive Officer of BofA's Southwest Banking Group and President of BofA Arizona, Ms. Munro brings business acumen and financial knowledge to the Company. Her experience with the cycles in Arizona's economy assists a growing infrastructure company like Pinnacle West in accessing capital and meeting its financing needs. Ms. Munro is an experienced director, currently serving on the boards of Knight and Premera Blue Cross.

Mr. Richard P. Fox is Director of the Company. Mr. Fox previously held executive, operational and financial positions at CyberSafe Corporation ("CyberSafe"), Wall Data, Incorporated ("Wall Data") and PACCAR Inc., and is a former Managing Partner of Ernst and Young's Seattle office. Mr. Fox is also a director of Acxiom Corporation, Univar, Inc., and ServiceMaster Global Holdings. Within the past five years, Mr. Fox has served as a director of FLOW International Corporation, Orbitz Worldwide, and Pendrell Corporation. As a former Managing Partner of Ernst and Young and as former Chief Financial Officer of Wall Data and President and Chief Operating Officer of CyberSafe, Mr. Fox has a deep understanding of financial and accounting matters. Mr. Fox has also served on the boards of several companies throughout his career, including seven public companies. His extensive board experience, including service on various audit committees and finance committees, including chairmanships, adds to the Board's depth and capabilities.

Ms. Paula J. Sims is a Director of the Company. Sims has extensive experience in the utility industry, serving with Progress Energy from 1999 to 2012, most recently as senior vice president of corporate development and improvement. During her career at Progress, she also held executive positions in Power Operations, Regulated Services, Fossil Generation, Regulated Fuels and Progress Fuels. Prior to joining Progress, Sims spent 15 years with General Electric Aircraft Engines in engineering, operations and plant management roles. She earned a bachelor's degree in engineering from Virginia Tech, a master's degree in engineering from Boston University and an MBA from the University of North Carolina at Chapel Hill. Sims is currently a professor of the practice of organizational behavior at UNC Kenan-Flagler Business School and an independent consultant.

Mr. David P. Wagener is Director of the Company. Mr. Wagener is the Managing Partner of Wagener Capital Management, an investment and advisory firm serving utility and private equity companies. He has held this position since June 1995. Mr. Wagener previously held executive positions at Salomon Brothers and Goldman, Sachs & Co. Within the past five years, Mr. Wagener served as director of Ormat Technologies. Mr. Wagener served as a director of SunCor Development Company from January 2011 to March 2013. Mr. Wagener brings to the Board over 30 years of experience in the power/energy industry, project finance and investment banking experience, and knowledge of utility regulation. His participation brings value to the Company and the Board as we address structural and business challenges facing the utility industry.

Dr. Denis A. Cortese is an Independent Director of the Company. Dr. Cortese is the Director of the ASU Health Care Delivery and Policy Program and a Foundation Professor in the Department of Biomedical Informatics, Ira A. Fulton School of Engineering and in the School of Health Management and Policy, W.P. Carey School of Business. He has held these positions since February 2010. Dr. Cortese has been Emeritus President and Chief Executive Officer of the Mayo Clinic (medical clinic and hospital services) since November 2009, and was President and Chief Executive Officer of the Mayo Clinic from March 2003 until his retirement in November 2009. Dr. Cortese is also a director of Cerner Corporation. As former President and Chief Executive Officer of the Mayo Clinic, Dr. Cortese has extensive experience in leading complex organizations with multiple constituencies and has led an organization that delivers strong and efficient customer service, which parallels the Company's strategies. Further, his background in public policy development, science and technology brings valuable perspective to issues that face the Company.

Mr. Michael L. Gallagher is an Independent Director of the Company. Mr. Gallagher is Chairman Emeritus of Gallagher & Kennedy P.A. ("Gallagher & Kennedy") in Phoenix, Arizona (an Arizona-based law firm). He has held this position since 2001. Mr. Gallagher served as President of Gallagher & Kennedy from 1978 through 2000. Mr. Gallagher is a director of AMERCO, the parent company of U-Haul International, Inc., and chairs its Independent Governance Committee. He is also a Trustee of the Peter Kiewit Foundation. Mr. Gallagher has represented a broad and diverse spectrum of corporate clients. Mr. Gallagher provides guidance and judgment gained through advising senior management and boards of directors on the varied issues regularly considered by the Board. His knowledge and experience from participating on the boards of other publicly-traded and private companies provides valuable perspective to the Company, and his extensive experience addressing corporate governance matters makes him a good fit for our Corporate Governance Committee.

Dr. Roy A. Herberger Jr., Ph.D., is an Independent Director of the Company. Dr. Herberger is President Emeritus of the Thunderbird School of Global Management (graduate management school) ("Thunderbird"). He has held this position since November 2004. Dr. Herberger was President of Thunderbird from 1989 until August 2004. Dr. Herberger is also a director of the Apollo Education Group, Inc. ("Apollo Group") and a Trustee for the Mayo Clinic. Dr. Herberger has both management experience and a strong understanding of business and economic trends. He also has extensive corporate board service, which aids in his contributions to the Company's Board. Dr. Herberger's service as the Lead Director and Chair of the Compensation Committee of the Apollo Group, a Fortune 500 company, and his service as a Trustee for the Mayo Clinic, contributes to the strength of the Company's governance and human resources processes.

Dr. Dale E. Klein Ph.D., is an Independent Director of the Company. Dr. Klein served as Chairman of the U.S. Nuclear Regulatory Commission from July 2006 to May 2009, and thereafter continued as a Commissioner until March 2010. He was Assistant to the Secretary of Defense for Nuclear, Chemical and Biological Defense Programs from November 2001 to July 2006. Dr. Klein is a Professor of Mechanical Engineering and Associate Director of the Energy Institute at the University of Texas at Austin. He has held these positions since April 2010. Dr. Klein is also Associate Vice Chancellor for Research at the University of Texas System. He has held this position since January 2011. He is also a director of Southern Company.

Mr. Humberto S. Lopez is Independent Director of the Company. Mr. Lopez is President of HSL Properties, Inc. (real estate development and investment), in Tucson, Arizona. He has held this position since 1975. In addition to management and business knowledge, Mr. Lopez brings extensive investment and real estate development expertise to the Company. His understanding of real estate and associated markets has proven to be a valuable asset to the Company due to the importance of those markets in Arizona. Mr. Lopez is also familiar with the State's historic economic cycles, which helps the Company plan for future growth and energy needs.

Mr. Bruce J. Nordstrom is an Independent Director of the Company. Mr. Nordstrom is President of and a certified public accountant at the firm of Nordstrom & Associates, P.C., in Flagstaff, Arizona. He has held this position since 1988. As the president of an accounting firm, Mr. Nordstrom has an extensive accounting, auditing and financial skill set. Additionally, he provides familiarity with principles of risk management and oversight, and the perspectives of customers in the Northern Arizona service territory of APS.

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